由超短脉冲控制的相位敏感等离子体非线性

IF 1.4 4区 物理与天体物理 Q3 PHYSICS, MULTIDISCIPLINARY JETP Letters Pub Date : 2024-08-24 DOI:10.1134/S0021364024601489
I. V. Savitsky, P. B. Glek, R. M. Aliev, E. A. Stepanov, A. A. Voronin, A. A. Lanin, A. B. Fedotov
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引用次数: 0

摘要

实验证明了激光脉冲在硒化锌薄膜中产生的对载流子包络相位敏感的光谱成分,数值模拟也证实了这一点。我们采用了一种泵浦-探针方案,使持续时间约为 1.5 场周期、中心波长为 1.7 μm、载流子包络相稳定的泵浦脉冲在硒化锌薄膜中诱发光离子化。探测脉冲被等离子体散射,在其光谱边缘产生新的相敏光谱成分。理论分析证实,等离子体的非线性是产生这些成分的机制之一。在产生高阶谐波和阿秒脉冲序列时,所观察到的效应可用于描述超短脉冲的载流子包络相位。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Phase-Sensitive Plasma Nonlinearity Controlled by Ultrashort Pulses

The generation of spectral components sensitive to the carrier-envelope phase of a laser pulse in a thin zinc selenide film has been experimentally demonstrated and confirmed by a numerical simulation. A pump–probe scheme has been implemented so that a pump pulse with a duration of about 1.5 field cycles, a central wavelength of 1.7 μm, and a stabilized carrier-envelope phase induces photoionization in a thin zinc selenide film. The probe pulse is scattered by the plasma, generating new phase-sensitive spectral components at the edges of its spectrum. The theoretical analysis has confirmed plasma nonlinearity as a mechanism for generating these components. The observed effect can be used to characterize the carrier-envelope phase of ultrashort pulses during the generation of high-order harmonics and sequences of attosecond pulses.

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来源期刊
JETP Letters
JETP Letters 物理-物理:综合
CiteScore
2.40
自引率
30.80%
发文量
164
审稿时长
3-6 weeks
期刊介绍: All topics of experimental and theoretical physics including gravitation, field theory, elementary particles and nuclei, plasma, nonlinear phenomena, condensed matter, superconductivity, superfluidity, lasers, and surfaces.
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